Edmonton Oilers defender Mattias Ekholm is day-to-day with an undisclosed injury but could return for the conference finals if the team advances, according to coach Kris Knoblauch. Ekholm has only played once since late March and has missed all 10 playoff games, although he has resumed light skating. Despite his absence, the Oilers are one win away from the conference finals, and Ekholm’s playoff experience would significantly enhance their Stanley Cup aspirations, as he previously contributed notably during last season’s playoffs.